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Thread: Just refilled my completley drained pool

  1. Back To Top    #1

    Join Date
    Mar 2013
    Scottsdale Az

    Just refilled my completley drained pool

    I just finished filling me pool and want to make sure I used the Pool Calculator correctly.
    My readings
    TC = 0
    Ph = 7.8
    TA = 130
    CH = 150
    CYA < 20 Filled the tube and could still see the black dot

    What Pool Calculator tells me to add
    95 oz of 10% liquid chlorine
    23 oz of muriatic acid
    309 oz calcium chloride
    76 oz of stabilizer

    What order should I add these?
    19k Gallons, In ground, plaster, DE filter

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Just refilled me completley drained pool

    Welcome to TFP!

    I would start by adding 2 ppm of chlorine, which is only 47 oz. The Pool Calculator is assuming you have CYA in the water, but you don't so you don't need as much chlorine just at the moment.

    Then start working on raising the CYA level up to around 50. Remember that it is fairly easy to add more CYA, but tricky to lower CYA, so add less than you think you will need, wait a week, test CYA again, and adjust from there.

    The PH is alright up to 7.8, so it can stay there for the moment. Adding CYA will likely bring it down just a little, so no need to do anything on PH right at the moment.

    CH you can do any time in the next few days.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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